Fuel-valve.



FUEL VALVE. APPLICATION man SEPT. 25. |916.

Patented May 29,

d www il /lf/ Nw ww QN JOHN W. EOBHTG, 0F GINCUWNATI, OHIO.

Application filed VSeptember To all whom #may concern:

Be it known` that I, JOHN'W. HOBING, a citizen of the United States, residing 4at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Fuel-Valves, of which the following is a specification.

lt is the object of my invention to provide a fuel-valve especially adapted for dischargifng aA hollow stream of liquid or gaseous nel, readily understood from the -following description and claims, and from the drawing, in which latter: j j

Figure 1 is an axial section of my improved device, shown in connection with a fuel-mixer and burner-tube.

Fig. 2 is` an enlarged axial section showing the valve adjustment and illustrating the voperation of the valve; and,

Fig. 3 is a cross-section on the line 3--3 of Fig. 2. I havev exemplified my invention as employed in connection with a liquid fuel, although it is obvious that the same -may be employed in connection with gaseous fuel, if desired.

vThe valve is represented at 11 and is shown as having a fuel-pipe 12 connecting therewith, as by means of a threaded joint 13. The fuel-pipe is arranged to receive its fuel in suitable manner, as from a feedpipe 14 communicating with a suitable fueltank' 15 for4 containing the fuel, such as gasolene, alcohol, or similar fuel.

The valve comprises a valve-casing 2O.` 21 is a valve-stem which is shown extending through 'the 'fuel-pipe, there being a fuel-passage 22 surrounding said stem between said stem and the inner wall of the fuel-pipe. A compressible gasket-packing 23 between the pipe and stem` closes one end of said passage and acts to hold the stern in adjusted positions. A turningpart 24, shown as a thumb-wheel, is xed to the outwardly projecting end of the valve-stem. v

The valve comprises a shut-0E valve 27 and a regulating valve 28 having a'- fuelspace 29 therebetween. The valve-stem has a valve-closure 30 thereon'which coacts with the valve-seat 31 in the valve-casing for forming the shut-od' valve.

The regulating valve comprises a lregulating shank 32 lhaving thereon a cylindrical Specification of Letters Patent.

and the l invention will be further at, isis. serial ne. 121,9o'o.

Patented May 29.. tft.

portion33 from which a slightly tapering 4portion 34 projects, the slightly tapering portion terminating in a blunt end 36, which forms a sharp angle with the .tapering portion of the shank. The shank 32A coacts with a cylindrical bore 37 in the end of the valve-casing. The tapering portion 34 of the regulating shank 32 is arranged to be moved to greater or less extent into the fuels ace 29 and coacts with the cylindrical bore 3 to regulate the flow of fuel through the regulating valve.

The cylindrical bore or aperture opens into a recess38 in the end of the valvecasing, an annular bead 39 surrounding said recess. The regulating vshank coacts with the cylindrical bore and projects into said cavity, the outer end of said shank ex-- tending outwardly beyond said bore when discharging fuel. When the valve-stem is moved axially the space between said regulating shank and the wall of the bore is p increased or decreased for regulating the ow of gas or fuel past the outer end of the regulating shank. y

The construction is such that the fuel emitted from the valve assumes a hollow form, as a tube of fuel, lwhereby the outside dimensions of a given volume of emitted fuel is increased so as to contact a greater volume of air, whereby a large amount of air in proportion to the volume of fuel is mixed with the fuel for providing a fuelmixture having a maximum amount of air per fuel unit for providing a high-grade mixture, which will burn with great heat and be economical.

The valve-stem has thereon an externally threaded portion 41 having threaded connection lwith the internally threaded portion 42 of the` valve-casing. The threads are so 'arranged that there is a fuel-passage 43 between the stem and casing at the threaded portion which follows the threads. The fuel-passage 43 maybe formed by cutting the grooves between the threads in the casing of larger cross-sectional dimensions than the cross-sectional dimensions of the threads on the stem. rlhis fuel-passage is so arranged that when the valve-stem is turned in one direction the rear faces of the external ies threads will engage the rear faces of the in- 'ternal threads, and when the valve-stemis turned in the opposite direction, the front faces of the external threads will engage the front walls of the internal threads, transferring the fuel-passage to opposite sides of the threads. i

The operation of the valve-stem in opening and closing the valve simultaneously acts to clear the fuel-passage at the threads of any impurities therein, as the rotation of the valve-stem and the relative axial movement between its threads and the threads of the casing act to crush or disintegrate any sediment or impurities in the fuel for causing ready passage thereof through the valve. The rotation of the valve-stem in the fuelpipe also grinds or crushes any sediment or impurities there may be 1n the fuel-passage 22, so as to cause ready passage thereof through the valve.

The valve-stem is at the outer end of its threaded portion provided with a reduced portion 47 for forming an annular space 48 between it and the valve-casing for forming a fuel-passage between the fuel-passage along the threads and the valve-seat 31. l

When a fuel, such as gasolene or alcohol is being used, the valve-casing is preferably heated by suitable means for vaporizing the fuel prior to its emission from the valve.

rllhe fuel, whether in th form of a gas or spray emitted from my improved valve, 1s emitted in tubular form owing to the construction and relation of the parts, that is to say, the fuel is emitted as a hollow spray of gas or vapor, the spray 1n practice tending to spread radially in all directions about a central hollow space 49, as exemplifiedby the dotted spray lines 50. The fuel being discharged is in practice under pressure, either due to the heat conveyed to the fueltank 15 or by other means. Among the advantages gained by my invention, it may be stated that the forming of the emitted fuel as a hollow spray or tubular formation, increases the area of 'contact between the emitted fuel andthe surroundin air for causing a greater volume of air to mlx with a given amount of fuel and to cause an intimate mixture betweenv the gas and air immediately upon discharge of the fuel from the valve. The fu charged into a suitable mixer into which the air may also be impelled by the action ofthe discharge, such a mixer being exemplified at the tube 51 which has an'inlet opening 52, and a burner-tube suitable for employment in self-heating sad-irons, lthe burner-tube having burner-orifices 53.

The cylindrical form of the dischargebore 37 hasa tendency to cause the emitting fuel to follow the cylindrical projection of said discharge-bore, the abrupt termination of the regulating shank 32 at the blunt end 36, in conjunction with vthe form of the discharge bore, preventing the fuel from being drawn toward the axial line of the valve.

Having thus fully described my invention,

el may be diswhat I claim as new and Letters Patent, is:

1. A fuel-valve comprising a shut-od valve and a regulating valve having a fuelpassage therebetween,` said valves comprising a casing having a valve-seat for said shut-olf valve and a cylindrical bore for said regulating valve, and a valve-stem having thereon a valve-closure for said shut-off valve and a regulating shank, said ing shank comprising a cylindrical portion in said fuel-passage from which cylindrical portion a sli htly tapering portion extends outwardly t rough said cylindrical bore, the proximate ends of said cylindrical portion and slightly tapering portion of said regulating shank being normally at the `iunction betweenthe outer end of said fueldesireto secure by regulatslightly tapering portion outside said cylindrical bore, and said In a fuel-valve, the combination of a supply-pipe, a valve ,at one end thereof, said valve comprising a shut-od valve and a regulating valve having a fuel-passage therebetween, said regulating valve comprising a discharge bore, a regulating shank therein provided with a slightly tapering sharp angle with tapering face of said slightly tapering portion, said end-face located outside said bore during discharge of the fuel therefrom, a valve-stem on which said regulating shank is located, said valve-stem extending through the other endof said supply-pipe, and turning means on said valvestem outside said supply-pipe, the wall of -said supply-pipe and said valve-stem having therebetween communicating with said shutoli' valve, said supply-pipe provided with a supply-passage communicating with said stem provided with external threads, and :fuel-passage at a point distanced from the coacting internal threads, said external 35 respective ends of said supply-pipe. threads and internal threads having their 1l. In a fuel-valve, thev combination of a proximate walls spaced apart for forming a shut-off valve and a regulating valve hava fuel-passage communicating with said ing a fuel-passage therebetweemsaid regushut-0E valve, and said valve-stem shiftable lating valve comprising a casing having a for locating said fuel-passage -at opposite 4o cylindrical discharge-bore and a slightly sides of said threads. tapering regulating shank received through 6. In a fuel-valve, the combination of a lo said bore, said regulating shank terminating casing having an outer recess in its end surin an outer end-face extending across a subrounded by an annular bead, and provided stantial part. of said regulating shank and with a cylindrical discharge-bore opening 45 forming a sharp angle with the slightly into said recess, and a regulating shank havtapering Jface of said slightly tapering reguing a cylindrical portion and a slightly 1t lating shank, and adjusting means for said tapering portion extending from said cylinvalves comprising a valve-stem provided drical portion and terminating in an end withexternal threads, and coacting internal wall forming a sharp angle with said taper- 5o threads, said external threads and internal ing portion, said end wall located outside threads having their proximate walls spaced said cylindrical discharge bore during dis- 20 apart for forming a fuel-passage communicharge of fuel through said valve, and the eating with said shut-oil valve. proximate ends of said cylindrical portion 5. In a fuel-valve, the combination of a and slightly tapering portion meeting at the 55 shut-ofi' valve and a regulating valve having inner end of said cylindrical discharge-bore a fuel-passage therebetween, said regulating with said slightly tapering ortion located M valve comprising a casing having a disin and coacting with said cylindrical discharge-bore and a slightly tapering regucharge bore.

lating shank received through said bore, said In testimony whereof, I have hereunto 60 regulating shank terminating inan end wall signed my name in the presence of two subof considerable cross-sectional diameter with scribing witnesses. 3 relation to the diameter of said regulating JOHN W. HOBING. shank, said end wall forming a sharp angle Witnesses:

with said tapering portion, and adjusting v EDMUND A. DrrrMAN, means for said valves comprising a valvev GEORGE S. HAWKE. 

